Joseph temler



. J.'I'E1VILER. MACHINE FOR MAKING JOINTS WITH METAL CLAMPS. No. 515,028. Patented Feb. 20, 1894..

NITED STATES PATENT OFFICE.

JOSEPH TEMLER, OF WARSAW, RUSSIA. I

MACHINE FOR MAKING JOINTS W ITH METAL CLAMPS.

SPECIFICATION forming part of Letters Patent No. 515,028, dated February 20, 1894.

Application filed June 5, 1893. Serial No. 76,645. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH TEMLER, m an ufacturer, a subject of the Emperor of Russia,

anda resident of Warsaw, in the Empire of Russia, have invented certain new and useful Improvements in Machines for Making Joints wlth Metal Clamps, of which the following is a specification.

The invention is illustrated in the accompanying drawings, wherein- Figure 1, is a side view of a clamp such as 1s used to connect two sheets lying in the same plane. Fig; 2, is a side view of a stack of such clamps. Fig. 3, is a side view of a corner clamp. Fig. 4, is a side view'of a stack of such clamps. Fig. 5, is a vertical cross section of the clamp-attaching machine. Fig. 6, 1s a side view of the machine, partly in vertical longitudinal section. Figs. 7, 8, and 9, are detail vertical cross sections of the operating parts showing successive positions. Fig. 10, is a view of a box corner showing a clamp attached thereto.

In comparison with other machines for similar purposes the one hereinafter described presents thisimprovement that in making the joint it uses clamps which are fed to it both ready bent, as shown in Figs. 1 and 3 and stacked one over the other as seen .in Figs. 2 and 4.

The machine is shown in Fig. 5 in transverse section and in Fig.6 in longitudinal section and is constituted as follows: Above the framing G a two armed lever h is arranged and actuated by a pitman or connecting rod 3 operated by a pedal. The lever h acts upon a plunger a. guided in the framework and the lower end of the plunger is surrounded by a movable sheath 1) maintained in its lowermost position on the plunger a by spring a. At the back of plunger'a the clamp hopper or receptacle (:1 is provided into which are introduced the clamps stacked as shown in Figs. 2 and 4E. The last or lowermost clamp rests on the bottom of the clamp hopper by its arms and is then at such level as is required to permit its introduction under the plunger. A slide 6 bearing against the clamp from the rear and moving forward horizontally serves at the right moment to introduce the clamp under the plunger 0!. and into the sheath I). f is the bed plate for receiving the plates or sheets to be connected. It is vertically movable on a suitable mandrel and springt serves to retain it in its highest position.

The machine shown in the drawings is intended to make corner joints; consequently the working face of the plunger a, mandrel g and the bearing surface of the parts 1),) form angles. If the machine is'to make fiat joints, these parts are straight, in all other respects the machine retains the construction shown.

The operation of the machine and the improvements effected therein will be understood from the following When starting the machine the plunger a remains at rest until the slide 6 has, by moving forward, pushed the lowermost clamp under the plunger 0. and into the sheath 1). In the drawings this motion is imparted to the slide by the connecting rod 8 provided with a cam or incline s for this purpose. The slide e might however equally well be actuated by some other moving part of the machine. In the sheath 1) the clamp, when pushed in, meets a laterally enlarged part adapted to the diverging position of the arms of the clamp. From the said lateral enlargement downward the sides of the sheath gradually approach one another until they are again parallel. At the lower edge of the sides that guide the clamp-arms there are small projections 11' The interior faces (toward the sheath) of these projections 12' are beveled. Atthe moment when the clamp has arrived under the plunger a, (as shown in Figs. 5 and 6) the plunger or. together with the sheath 6 surrounding it is moved toward the plates, sheets, or boards laid on the bed plates ffor the purpose of being joined. So soon 0 as the sheath 1) strikes the plates it is forced to stop while the plunger a continues to move descending within the sheath. In this movement the plunger pushes the clamp under it forward and by reason of the gradual nar- 5 rowing inner faces of the sheath, the clamp arms assume a direction parallel to the straight sides of the latter or in other words, the arms of the clamp that previously were divergent, become parallel. The points of the clamp now reach the projections b and these bend the clamp arms inward when the latter proceeddownward. In consequence of such bending the clamp points meet the plates (which for corner joints are at fortyfive degrees as shown in the drawings) approximately at right angles or in the position most favorable for penetration as will be seen in Fig.7. For the production of flat joints the projections b on sheath 1) are so diminished or the eifective bevel of the same made of so sharp an angle that they produce a slight inward bending onlyofthe points, such as is desirable forthe subsequentbendingoverof such points. As long as the points have to penetrate into the plates, boards or sheets to be converted they are subject to the bending of the pro jections b. In this shape (for the better maintenance whereof the corresponding edges of the plates f are slightly beveled) the clamp arms pass through the boards or plates into the space over the mandrel 9 see Fig. 8. As the spring 11 carrying the plates f is more powerful than that which acts on the sheath 1) (spring 0) the bed plates f will remain raised until the plunger (1, with the clamp under it, bears against the plates or sheets to be connected, after that the entire pressure exerted upon the plunger a acts on the bed plates also and overcoming the power of spring 2' drives the latter down. In this operation the parts of the clamps projecting below and bent inwardly are forced against the mandrel g and the latter, without any intermediary gearing first drives them farther inward, as shown in Fig. 9, and then against the inner faces of the plates, sheets or boards, so that the points slightly enter into the same as indicated in Fig. 10.

What I claim, and desire to secure by Letters Patent of the United States, is

1. The movable bed-plate f upon which is placed the article to which a clamp is to be attached, said bed-plate having an aperture therein, and a stationary mandrel g beneath said bed-plate having its upper end located in said aperture in said bed-plate with its upper immovable working face normally below the outer articlesupporting face of said bed-plate, in combination with a plunger 0,

movable to and from said bed-plate, a hollow movable sheath b located above said bed-plate and movable to and from the same, said sheath being hollow so as to embrace said plunger and to hold a clamp (to be inserted into the article on the bed-plate) beneath said plunger, and said sheath having at its lower end inwardlyextending projections 11, b,

beveled on their upper faces, whereby when g the plunger descends upon the clamp and the plunger and sheath descends upon the bed plate the points of the clamp are turned 1nward by said projections b b and enter the surface of the article at an angle to the horizontal, and by the further action of the machine when the sheath, plunger and bed-plate descend together, the turned-in ends of the clamp encounter the upper workingt'ace of the mandrel, and are therebyturned against the inner face of the article, substantially as set forth.

2. The framing G, the mandrel g fixed thereto, the bed-plate f pivoted to said framing and having an aperture surrounding the upper working end of said mandrel, and astrong spring 1' upholding the bed-plate and 1naintaining its upper face above the working end of the mandrel, in combination with the vertically-movable plunger a mounted to slide in said framing, operating means for said plunger, and a sheath 1) surrounding and supported by the lower end of said plunger and movable upon said plunger, said sheath being hollow beneath said plunger so as to retain a clamp, and a spring 0 weaker than the spring 1' constituting a yielding connection between the sheath and plunger, substantially as set forth.

In testimony whereof I sign this specification in the presence of two subscribing witnesses.

J OSEPI-I TEMLER.

Vi tnesses:

I-[ERNANDO DE Soro, C. F. ROSENCRANTZ. 

